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By: Fryxell, Paul A. - Krapovickas, AType: ArticleIn: Contributions from the University of Michigan HerbariumVolume: 17Series:Issue:Date: 1990Page Range: 173--182Publication Info: Ann Arbor, University Herbarium, University of Michigan, 1939-Subjects:
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By: Fryxell, Paul A. - Krapovickas, AType: ArticleIn: Novon a journal of botanical nomenclature from the Missouri Botanical GardenVolume: 14Series:Issue:Date: 2004Page Range: 58--69Publication Info: St. Louis, MO, Missouri Botanical Garden,Subjects: